prepare for bleach

Hey, I was wondering if anyone could help me with something.. I dyed my naturally blonde hair blue-black a year or two ago.. I like it a lot but I'm ready for a change.. last summer I bleached some streaks into it, but then I cut them off when I got bangs.. But when I bleached the streaks my hair was pretty damaged. Now I'm thinking of bleaching my whole head and then dying it red or something, but is there anything you would recommend I use to prepare my hair for the damaging affects of bleach? Like special conditioners or something?

Oh yeah, I don't go to salons. The ones where I live are pathetic. My last salon hair cut was tragic, and the last time I got my hair colored I would have sued if I hadn't signed a waiver first. So please don't recommend I go to a salon because I won't. I've been dying mine and my friends hair for atleast 10 years now..

Thanks, any advice is appreciated =)

anna